S-Works Crux 5 Frameset FACT 12r Carbon
The S-Works Crux 5 Frameset is the foundation for an elite-level gravel race bike. Built from FACT 12r carbon, it is designed to be incredibly light, fast, responsive and efficient across demanding gravel race courses and mixed-surface riding.
This frameset gives riders the opportunity to build a top-tier Crux exactly how they want it. With a claimed frame weight of just 789 grams, a threaded BSA bottom bracket, flat-mount disc brake setup, UDH dropout and S-Works carbon fork, it delivers a serious platform for performance gravel racing.
At a Glance
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Use: Gravel racing, fast mixed-surface riding and premium custom gravel builds
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Frame: S-Works Crux 5 FACT 12r Carbon
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Fork: S-Works FACT Carbon
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Seatpost: S-Works Tarmac SL8 Carbon seat post
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Bottom Bracket Standard: 68mm BSA threaded
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Rear Axle: 12x142mm thru-axle
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Brake Mount: Flat-mount disc
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Dropout: UDH dropout
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Frame Weight: Approx. 789g
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Frameset Weight: Approx. 1.63kg, size 56
Why We Like It
- FACT 12r carbon construction delivers an exceptionally light and responsive gravel race platform
- Ideal for riders wanting to build a custom high-performance gravel bike
- Threaded BSA bottom bracket keeps servicing practical and reliable
- UDH dropout provides modern drivetrain compatibility
- S-Works FACT Carbon fork gives precise front-end control across rougher terrain
- Includes S-Works Tarmac SL8 carbon seatpost and integrated wedge-style seat binder
Technical Specifications
Frameset
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Frame: S-Works Crux 5 FACT 12r Carbon, Rider First Engineered™, threaded BB, 12x142mm thru-axle, flat-mount disc, UDH dropout
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Fork: S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc
Cockpit / Included Parts
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Seatpost: S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset, lightweight saddle clamp
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Seat Binder: Integrated wedge
Weight
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Frame Weight: Approx. 789g
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Frameset Weight: Approx. 1.63kg, size 56
Who This Frameset Is For
The S-Works Crux 5 Frameset is ideal for experienced gravel racers, performance-focused riders and custom bike builders who want to create a premium lightweight gravel bike from the ground up. It suits riders chasing speed, efficiency and race-day performance across gravel, rough roads and mixed-surface courses.
Shop at Mackay Cycles
Available from Mackay Cycles, your local bike shop for premium road, gravel, mountain and performance bikes in Mackay. Contact us for build advice, component options, availability, click and collect, or help planning your ideal Crux gravel build.
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